Fix test flakiness

Fix test flakiness

mStarted is set on UI thread, so we shouldn't check it on other threads.
And there is no point to check it at the beginning of the test since it is always false.

BUG=680533
Review-Url: https://codereview.chromium.org/2629703002
Cr-Commit-Position: refs/heads/master@{#443507}
Committed: https://chromium.googlesource.com/chromium/src/+/860143d6bc67646d446e061de9ad873372965bd2

[qinmin, 2017-01-12 21:42:28]

qinmin@chromium.org changed reviewers:
+ dfalcantara@chromium.org

[qinmin, 2017-01-12 21:42:29]

PTAL

[gone, 2017-01-12 21:43:06]

lgtm

[qinmin, 2017-01-12 21:47:21]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2017-01-12 21:47:51]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-12 22:43:17]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484257641531560, "parent_rev":
"fa4d63fe4de1c958b38ca404fffeeab5f883bfa7", "commit_rev":
"6568164772b0410b90110159d80ef3adb4e96260"}

[commit-bot: I haz the power, 2017-01-12 22:46:55]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484257641531560, "parent_rev":
"fa4d63fe4de1c958b38ca404fffeeab5f883bfa7", "commit_rev":
"6568164772b0410b90110159d80ef3adb4e96260"}

[commit-bot: I haz the power, 2017-01-12 22:49:50]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484257641531560, "parent_rev":
"fa4d63fe4de1c958b38ca404fffeeab5f883bfa7", "commit_rev":
"6568164772b0410b90110159d80ef3adb4e96260"}

[commit-bot: I haz the power, 2017-01-12 22:52:41]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-01-12 22:52:43]

Failed to commit the patch.

[qinmin, 2017-01-13 06:16:16]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2017-01-13 06:16:32]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-13 06:20:27]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484288176866820, "parent_rev":
"9cdca0764fe0ab606d904f8e2bd6eb5117773a97", "commit_rev":
"860143d6bc67646d446e061de9ad873372965bd2"}

[commit-bot: I haz the power, 2017-01-13 06:20:58]

Description was changed from

==========
Fix test flakiness

mStarted is set on UI thread, so we shouldn't check it on other threads.
And there is no point to check it at the beginning of the test since it is
always false.

BUG=680533
==========

to

==========
Fix test flakiness

mStarted is set on UI thread, so we shouldn't check it on other threads.
And there is no point to check it at the beginning of the test since it is
always false.

BUG=680533

Review-Url: https://codereview.chromium.org/2629703002
Cr-Commit-Position: refs/heads/master@{#443507}
Committed:
https://chromium.googlesource.com/chromium/src/+/860143d6bc67646d446e061de9ad...
==========

[commit-bot: I haz the power, 2017-01-13 06:20:59]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/860143d6bc67646d446e061de9ad...